Year	Percent of GDP
2004-01-01	18.3492
2005-01-01	16.4788
2006-01-01	17.8190
2007-01-01	17.7314
2008-01-01	16.7515
2009-01-01	17.0364
2010-01-01	17.7501
2011-01-01	18.3660
2012-01-01	18.4922
2013-01-01	21.2389
2014-01-01	22.6546
2015-01-01	25.0406
2016-01-01	26.4448